get
https://api-sandbox.retail.monext.com/v1/checkout/paybylink/paymentlinks/
Retrieving the status of a payment link is a service that provides real-time updates on the state of a specific payment link.
This service is invoked with a payment link unique identifier, which was initially generated and provided to the user. The status of a payment link can be UNPAID, CANCELLED, BLOCKED, EXPIRED or PAID.